Actually, the premise of episode 6 is interesting, but somehow the execution feels messy and not optimal. In addition, there is one detail that I think doesn't make sense, namely when Kuruma's ECG suddenly drops to 0 but it turns out Kuruma is already conscious. Until the end of the episode there is no explanation at all how the ECG can be 0 but on the other hand the patient has regained consciousness. So, in my opinion, this Kuruma scene feels forced to be shown as a solution to Botan's problem.